Structural frame



FIG. 1 is a first top front side perspective view of a structural frame of a new, original, and ornamental design;

FIG. 2 is a second top perspective view of a structural frame of a new, original, and ornamental design;

FIG. 3 is a front side elevational view of a structural frame thereof, with a rear side, left side, and right side elevational view being the same as FIG. 3 of a new, original, and ornamental design;

FIG. 4 is a front corner elevational view of a structural frame thereof, with a rear corner, left corner, and right corner elevational view being a minor image of FIG. 4 of a new, original, and ornamental design;

FIG. 5 is a third side elevational view of a structural frame of a new, original, and ornamental design;

FIG. 6 is a top view of a structural frame of a new, original, and ornamental design; and,

FIG. 7 is a bottom view of a structural frame of a new, original, and ornamental design. 

CLAIM The ornamental design for a structural frame, as shown and described. 